Metamorphism and Earth Science Quarter 4
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Questions and Answers

When does metamorphism occur?

  • If the rock's mineral composition is allowed to cool to form new type of rocks.
  • If the rock's mineral composition transformed due to intense heat and pressure (correct)
  • If the rock's mineral composition is removed due to intense heat and pressure
  • If the rock's mineral composition is heated and melted due to intense pressure.
  • What is the primary agent responsible for metamorphism?

  • Gravity
  • Wind
  • Water
  • Heat and pressure (correct)
  • Which of the following factors can contribute to the intensity of metamorphism?

  • Depth of burial
  • Chemical reactions
  • Duration of metamorphic conditions
  • All of the above (correct)
  • In which tectonic setting does regional metamorphism primarily occur?

    <p>Convergent boundaries (C)</p> Signup and view all the answers

    Which of the following plate boundaries produces strong and devastating earthquakes?

    <p>Transform (C)</p> Signup and view all the answers

    What is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet called?

    <p>Volcanism</p> Signup and view all the answers

    What is a vent or opening on a planet's surface which allows molten rock called magma, volcanic ash and gas to escape out onto its surface called?

    <p>Volcano</p> Signup and view all the answers

    What is the depression at the summit of a volcano, or at which is produced by a meteorite impact called?

    <p>Crater</p> Signup and view all the answers

    What is a large depression typically caused by collapse or ejection of the summit area of a volcano called?

    <p>Caldera</p> Signup and view all the answers

    What is the name of the type of volcano that often form the largest and tallest volcanoes? They are also the most explosive and dangerous of the types of volcanoes.

    <p>Composite Volcano</p> Signup and view all the answers

    What is the name of the type of volcano that are usually smaller in size than composite volcanoes, and the eruptions are smaller also. They form into steep cone shaped hills?

    <p>Cinder Cone Volcano</p> Signup and view all the answers

    What is the name of the type of volcano that is the widest type of volcano with a gentle slope due to the low viscosity or runny lava that it produces?

    <p>Shield Volcano</p> Signup and view all the answers

    What is the name of the type of lava flow that is smooth and continuous lava crust. It forms when the effusion rate is low and consequently the velocity of lava flow is slow. Usually flows at least 10 times slower than typical lava flow?

    <p>Pahoehoe Lava Flow</p> Signup and view all the answers

    What is the name of the type of lava flow that is a rough rubbly (resemblance of rubble) crust of a lava flow?

    <p>Aa Lava Flow</p> Signup and view all the answers

    What is the name of the type of lava flow that forms when hot lava flow into water and cools rapidly, creating long tubes and bulbous pillow-shaped mounds of rock?

    <p>Pillow Lava</p> Signup and view all the answers

    What is the name of the type of lava flow that consist of large angular blocks of lava that are common if the silica content of lavas is higher (composition of basaltic, andesitic, to rhyolitic)?

    <p>Blocky Lava Flow</p> Signup and view all the answers

    Which type of volcanic eruption is the least violent?

    <p>Hawaiian</p> Signup and view all the answers

    Which type of volcanic eruption is characterized by short bursts of glowing lava created from the bursting of large gas bubbles?

    <p>Strombolian</p> Signup and view all the answers

    Which type of volcanic eruption is relatively small but violent explosions of viscous lava create columns of ash and gas and occasional pyroclastic flows?

    <p>Vulcanian</p> Signup and view all the answers

    Which type of volcanic eruption is the largest and most violent of all explosive eruptions, sending columns of pulverized rock, ash, and gases into the atmosphere?

    <p>Plinian</p> Signup and view all the answers

    What is the process of the formation of igneous rocks from the cooling and solidification of magma or lava?

    <p>Plutonism</p> Signup and view all the answers

    Flashcards

    Metamorphism

    The transformation of rocks due to temperature, pressure, and chemical conditions.

    Agents of Metamorphism

    The factors causing metamorphism include temperature, pressure, and water.

    Regional Metamorphism

    Metamorphism associated with large-scale mountain-building processes.

    Contact Metamorphism

    Changes in rock due to heat from a nearby magma body.

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    Compression

    Rocks are pushed or squeezed against one another.

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    Tension

    Rocks are pulled apart in opposite directions.

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    Shearing

    Some portions of a plate break away in different directions.

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    Confining

    The crust becomes compact, making it look smaller.

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    Metamorphism Conditions

    Intense heat and pressure cause metamorphism.

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    Volcanism

    The eruption of molten rock (magma) onto Earth's surface.

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    Volcano

    A vent on the planet's surface for magma, ash, and gas.

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    Crater

    The depression at the summit of a volcano.

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    Caldera

    A large depression caused by the collapse of a volcano's summit.

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    Composite Volcano

    Large and tall volcanoes known for explosive eruptions.

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    Cinder Cone Volcano

    Smaller volcanoes with steep cone-shaped hills.

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    Shield Volcano

    Wide volcano with gentle slopes formed by low-viscosity lava.

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    Volcanic Gases

    Gases released during eruptions include water vapor and other harmful gases.

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    Types of Eruption

    Different eruption types include Hawaiian, Strombolian, Vulcanian, and Plinian.

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    Hawaiian Eruption

    Fluid lava is ejected as fire fountains or flows.

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    Strombolian Eruption

    Short bursts of glowing lava from gas pressure.

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    Vulcanian Eruption

    Small but violent explosions releasing ash and gas.

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    Plinian Eruption

    The largest and most violent eruptions sending ash high into the atmosphere.

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    Pahoehoe Lava

    Smooth, continuous lava flow with low effusion rate.

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    Aa Lava

    Rough, rubbly crust of lava flow.

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    Pillow Lava

    Forms when lava meets water, creating bulbous shapes.

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    Blocky Lava

    Composed of large angular blocks of lava.

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    Study Notes

    Prayer

    • A prayer used for guidance and learning
    • Requests for guidance throughout the day
    • Asking for the ability to see the world through God's eyes, listen with God's ears, and speak with God's mouth
    • Seeking the heart to love and be kind to others
    • Asking for God's protection over teachers, friends, and families

    Earth Science Class - Quarter 4

    • Shows a welcoming graphic for Earth Science class
    • Quarter 4 is implied

    Metamorphism

    • Transformation of rocks and minerals due to changing temperature, pressure, and chemical conditions
    • Agents/factors affecting metamorphism include: temperature, pressure, and water

    Types of Metamorphism

    • Regional Metamorphism: Associated with large-scale mountain-building processes
    • Contact Metamorphism: Changes in rock caused by heat from a nearby magma body
    • Burial Metamorphism: Layers in sedimentary basins; sediments increase in pressure and temperature without deformation. Zeolite is an example
    • Hydrothermal Metamorphism: Change in chemical composition due to reaction with hot water; hot water accumulates dissolved metals and reacts with other rocks. Pegmatites and soapstones are examples
    • Dynamic Metamorphism: Cataclastic metamorphism; rocks along fault lines scrape together, altering the rocks due to high pressure and low temperature. Mylonites are an example

    Factors Influencing Rocks' Behaviour

    • Compression: Rocks push or squeeze against each other, stress directed to the center
    • Tension: Rocks pulled apart in opposite directions
    • Shearing: Some portion of a plate at the edge may break away in different directions, making the plate smaller inside
    • Confining: The crust becomes compact, leading to a smaller appearance

    Oral Quiz

    • When does metamorphism occur?: If the rock's mineral composition is transformed due to intense heat and pressure (option D is the correct answer)
    • What is the primary agent responsible for metamorphism?: Heat and pressure (option C is the correct answer)
    • Which of the following factors can contribute to the intensity of metamorphism?: Depth of burial, chemical reactions, and duration of metamorphic conditions (option D, all of the above is the correct answer)
    • In which tectonic setting does regional metamorphism primarily occur?: Convergent boundaries (option B is the correct answer)
    • Which of the following plate boundaries produces strong and devastating earthquakes?: Transform boundaries (option D is the correct answer)

    Volcanism and Plutonism

    • The objective includes describing and differentiating volcanic and plutonic rocks, and the process of volcanism and plutonism.

    Volcanism

    • The eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet
    • Volcano: A vent or opening where molten rock, volcanic ash, and gases escape out onto the surface
    • Plate movements usually form volcanoes along plate boundaries

    Types of Volcanoes

    • Composite Volcanoes: Form the tallest and largest volcanoes; highly explosive and dangerous
    • Cinder Cone Volcanoes: Usually smaller and have smaller eruptions; form steep cone-shaped hills
    • Shield Volcanoes: Widest volcanoes with gentle slopes due to low viscosity, or runny, lava

    Volcanic Materials: Gas and Pyroclastic Materials

    • Gases released during eruptions (water vapor, carbon dioxide, sulfur dioxide, hydrogen sulfide, and hydrochloric acid).
    • Surface water into a volcanic system can greatly increase explosiveness.

    Types of Volcanic Eruptions

    • Hawaiian Eruptions: Fluid lava ejected; fire fountains or lava flows are seen
    • Strombolian Eruptions: Short bursts of glowing lava from bursting gas bubbles at volcano vents
    • Vulcanian Eruptions: Relatively small but violent explosions of viscous lava; columns of ash and gas, occasional pyroclastic flows
    • Plinian Eruptions: Largest and most violent explosive eruptions; send columns of pulverized rock, ash, and gases miles into the atmosphere

    Types of Lava Flows:

    • Pahoehoe: Smooth and continuous lava crust; forms when effusion rate is low
    • Aa: Rough and rubbly lava crust; common when silica content is high
    • Pillow Lava: Forms when hot lava flows into water; creates tubes and bulbous rock shapes. Often under volcanoes that reach the surface.
    • Blocky: Consists of large angular blocks of lava; often common if the lava has a higher silica content (basaltic, andesitic, or rhyolitic)

    Closing Prayer

    • A prayer of thanks to God for gifts and graces
    • Affirming God as living and reigning

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    Description

    This quiz explores the fascinating processes of metamorphism in geology, highlighting the various types such as regional, contact, and burial metamorphism. It also touches on an Earth Science class context, ensuring a well-rounded understanding of geological transformations. Perfect for students studying geology or preparing for an Earth Science examination.

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